Mediki
LDH blood test: what your result means
LDH is an enzyme present in many tissues and rises when cells are stressed or damaged.
- Standard unit
- U/L
- Reported in
- U/L, IU/L, µkat/L
What does high LDH mean?
Higher values may suggest increased tissue turnover or injury. What counts as high depends on the reference range printed on your lab report, because ranges differ between laboratories.
What does low LDH mean?
Lower values are usually not clinically significant on their own. What counts as low depends on the reference range printed on your lab report, because ranges differ between laboratories.
LDH units and conversion
Mediki shows LDH in U/L. Labs may report it in other units; Mediki converts them automatically so results from different labs line up on one chart.
IU/L is numerically the same as U/L, so no conversion is needed.
| Unit on your report | Convert to U/L | Convert back |
|---|---|---|
| µkat/L | 1 µkat/L = 59.88 U/L | 1 U/L = 0.0167 µkat/L |
Convert a value from your report with the blood test unit converter.
Why track LDH over time?
A single LDH result is a snapshot. Comparing it with your earlier tests shows whether a value is stable, slowly drifting, or responding to a change in treatment or lifestyle, which is often more useful than one number on its own.
Read our guide on how to read blood test results to understand reference ranges, flags and units.
Track your LDH results in one chart
Upload your lab reports and Mediki plots every LDH result against its reference range. Your first 15 pages are free.
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Medical disclaimer: This page is general information, not medical advice. Reference ranges differ between laboratories, and only a doctor can interpret your results in the context of your health.